Board of Directors

Mike F. Chang, Ph.D., is the founder of our company and serves as our Executive Chairman. He served as Chief Executive Officer from the founding of our company until March 2023. Dr. Chang has extensive experience in both technology development and business operations in the power semiconductor industry. Prior to establishing our company, Dr. Chang served as the Executive Vice President at Siliconix Incorporated, a subsidiary of Vishay Intertechnology Inc., a global manufacturer and supplier of discrete and other power semiconductors, or Siliconix, from 1998 to 2000. Dr. Chang also held various management positions at Siliconix from 1987 to 1998. Earlier in his career, Dr. Chang focused on product research and development in various management positions at General Electric Company from 1974 to 1987. Dr. Chang received his B.S. in electrical engineering from National Cheng Kung University, Taiwan, and M.S. and Ph.D. in electrical engineering from the University of Missouri. Dr. Chang’s wealth of experience and knowledge in the semiconductor industry and leadership skills provide the Board with guidance on the Company’s strategic direction to achieve continuing success.

Mr. Stephen C. Chang serves as Chief Executive Officer effective March 2023. He previously served as the Company’s President since January 2021. Prior to that, he served in various management positions, including Executive Vice President of Product Line Management, Senior VP of Marketing, VP of the MOSFET Product Line, and Senior Director of Product Marketing. Mr. Chang has over 20 years of industry experience and leads the Company’s business strategies, product and technology development, sales and marketing functions, manufacturing operation and supply chain management, and other managerial responsibilities. He received his B.A. in Electrical Engineering from University of California, Berkeley, and M.B.A. from Santa Clara University. Mr. Chang’s extensive technological expertise and business experiences in the power semiconductor industry and his knowledge of our day-to-day operations and strategic initiatives provide our Board of Directors with valuable insights and in-depth understanding of our Company.

Lucas S. Chang, Ph.D., has been a director of our company since November 2016. Since January 2018, Dr. Chang has been serving as Vice President, General Counsel to United Microelectronics Corporation, a semiconductor manufacturing company listed on the New York Stock Exchange and Taipei Stock Exchange. From December 2016 to January 2018, Dr. Chang served as vice president, general counsel to Senhwa Biosciences, Inc., a drug development company listed on the Taipei Stock Exchange. From February 2006 to September 2016, Dr. Chang was a senior partner at the global law firm Morgan, Lewis & Bockius LLP, which is our principal outside counsel. Dr. Chang’s legal practice at Morgan Lewis focused on general corporate, cross-border investment and M&A transactions, and intellectual property. Prior to that and from 1995 to 2006, Dr. Chang was a partner and an associate at several leading law firms, including Wilson Sonsini Goodrich & Rosati, Heller Ehrman & McAuliffe, and Coudert Brothers. From 1991 to 1995, he served as a staff attorney and a patent agent at IBM Intellectual Property and Licensing Services. From 1985 to 1991, he was a research staff member and technical team leader at IBM Research Division. From 1983 to 1985, Dr. Chang served as a Senior Development Scientist at Union Carbide Corporation.

Dr. Chang holds a B.S.E. in chemical engineering from National Taiwan University; a Ph.D. in chemical engineering from the University of Washington, and a J.D. from Santa Clara University School of Law. Dr. Chang’s extensive experience and knowledge in legal, regulatory compliance, corporate governance, and intellectual property matters in the U.S. and Asia, as well as his scientific and technical background in the semiconductor and computer industries, provide the Board with important expertise and skills in analyzing legal and business issues affecting our operations.

Independent Director

Member of the Nominating and Governance Committee

Member of the Compensation Committee

Claudia Chen has been a director of our company since November 2019. Ms. Chen also advises and consults for both public and private companies. From July 2018 to April 2019, Ms. Chen served as the Head of Finance and Acting President of Sonatus, Inc, a company focusing on the development of in-vehicle and cloud platforms, where she also served as an advisor from May 2019 to July 2020. From 2008 to 2017, Ms. Chen served as the head of finance department (2010 to 2017 as Vice President of Finance and 2008 to 2009 as Director of Finance) of Atoptech, Inc, an EDA software company. Prior to that, Ms. Chen held various management positions at technology companies, including Director of Finance of Polaris Networks, Inc. from 2000 to 2005; Director of Finance of Transmedia Communications, Inc., which was acquired by Cisco Systems, Inc.; and Director of Finance of NeoParadigm Labs, Inc. Ms. Chen holds a B.S. in Accounting from National Taiwan University, Taipei, Taiwan, and an M.S. in Taxation from the University of Illinois, Urbana. Ms. Chen’s extensive skills and experience in the areas of financial and accounting matters, and her managerial expertise with respect to technology companies, contribute significantly to the Board’s ability to perform oversight and other responsibilities.

Independent Director

Member of the Audit Committee

Member of the Nominating and Governance Committee

King Owyang, Ph.D., has been a director of our company since April 2013. He is the Chief Executive Officer and Executive Director of Computime Group Limited, a Hong Kong listed company and a leading global provider of electronic control technologies. Prior to joining Computime, Dr. Owyang held various positions at Siliconix Inc., a U.S. semiconductor company, for over 21 years, including the President and Chief Executive Officer. He was instrumental in leading Siliconix to become a highly profitable company with industry leading products. Under his leadership and management, Siliconix established itself as the world leader in power switching and management products and its sales grew to a record level in 2008. Prior to joining Siliconix, Dr. Owyang held various technical and managerial positions at General Electric Company, where he was responsible for developing many enabling semiconductor technologies. Dr. Owyang is a recognized leader in the power semiconductor industry. He has published over 20 technical papers and has been awarded more than 25 patents. Dr Owyang obtained his B.S. in Physics and his Ph.D. in the field of Material Science in 1968 and 1974 respectively from the Massachusetts Institute of Technology, USA. Dr. Owyang’s broad experience in the power semiconductor industry, including his background in leadership positions at major technology companies, as well as his knowledge in the technical and operational aspects of semiconductor companies, provide the Board with an in-depth understanding of our business and operations.

Independent Director

Chair of the Nominating and Governance Committee

Member of the Compensation Committee

Michael L. Pfeiffer has been a director of our company since January 2014. From 2008 to 2013, Mr. Pfeiffer served as a member of the board of directors of BCD Semiconductor Manufacturing Limited, a company listed on NASDAQ until it was acquired in 2013. From 2009 to 2014, Mr. Pfeiffer served as a member of the board of directors of Integrated Memory Logic, Ltd., a semiconductor company listed on the Taiwan Stock Exchange until it was acquired in 2014. From 2014 to 2016, Mr. Pfeiffer served on the board of directors of Razer, Inc., a computer peripherals company. Mr. Pfeiffer, who is a certified public accountant in California and Oregon, worked for PricewaterhouseCoopers LLP for over 30 years, including 18 years as the engagement partner on the audits of the financial statements of high technology companies in the Silicon Valley. Mr. Pfeiffer received an M.B.A. from the University of Oregon and a B.A. from Eckerd College in Florida. Mr. Pfeiffer’s extensive experience and expertise in the area of finance, accounting and auditing of publicly traded companies in the semiconductor industry, and his knowledge and background in working with companies with international operations, make him a valuable member of our Board, particularly in its role of exercising oversight and risk management of the Company’s accounting and financial reporting process.

Independent Director

Chair of the Audit Committee

Michael J. Salameh has been a director of our company since November 2013. Mr. Salameh co-founded PLX Technology, Inc., a semiconductor company (PLXT), in May 1986 and served as its Chief Executive Officer until 2008. Mr. Salameh also served as a member of the Board of Directors of PLXT since its inception and was Chairman of the Board when it was acquired in August 2014 by Avago Technology, now Broadcom. PLXT was a NASDAQ-listed company from 1999 until it was acquired. During his tenure at PLXT, Mr. Salameh personally participated in many of the key company functions including sales, marketing, engineering, finance, and operations. Since 2015, Mr. Salameh has served as a strategic advisor to Scaleflux Inc., a privately held enterprise storage company. From 2010 to 2020, Mr. Salameh served as an advisor to the Chief Executive Officer and Board of Directors of Analogix Semiconductor, Inc., a privately held semiconductor company. From 1980 through 1986, Mr. Salameh was employed in various marketing management positions with Hewlett-Packard Company. Mr. Salameh received a B.S. in Engineering and Applied Science from Yale University and an M.B.A. from Harvard Business School. Mr. Salameh’s chief executive and marketing experience in the semiconductor industry, and his knowledge of the semiconductor business landscape, including customers, markets, suppliers and competition, provide the Board with critical understanding and support of our business and operations.

Lead Independent Director

Member of the Audit Committee

Chair of the Compensation Committee

So-Yeon Jeong has been a director of our company since November 2021. From April 2020 to May 2022, she served as the Head of Investor Relations at Magnachip Semiconductor Corporation based in Seoul, Korea, a designer and manufacturer of analog and mixed-signal semiconductor platform solutions. From 2011 to August 2020, she served as Consultant, Investor Relations for the Company. From 2007 to 2008, Ms. Jeong served as the Vice President of Investor Relations and Marketing Communications of Photon Dynamics, Inc. (acquired by Orbotech, now a KLA company), a global supplier of array test and repair equipment for LCD flat panel display manufacturers. From 2004 to 2007, Ms. Jeong served as the Director of Investor and Board Relations of Nextest Systems Corp. (acquired by Teradyne), a leading manufacturer of automatic test equipment for semiconductor IC manufacturers. Ms. Jeong received her M.B.A. from Fuqua School of Business, Duke University and B.A. from Ewha University, Seoul, Korea. Ms. Jeong’s extensive experience in public relations, as well as her familiarity with communications issues in the semiconductor industry, provide important expertise and capabilities to the Board in the areas of marketing and public communications. She is serving as the Chairperson of the Shareholders Communications Subcommittee.

Independent Director

Member of the Compensation Committee

Hanqing (Helen) Li has been a director of our company since November 2021. Ms. Li has been a Managing Director and Head of China Investment Banking of Needham & Company, LLC, a full-service investment banking and asset management firm, since 2011. Prior to joining Needham & Company, from 2010 to 2011, Ms. Li served as Strategic Sales Manager of TDK/Invensense, a leading provider of MEMS-based motion sensors. From October 2006 to 2008, Ms. Li served as a senior design engineer of Marvell Technology Group, a global supplier of infrastructure semiconductor solutions designed to process, move, store and secure data. From 2002 to October 2006, Ms. Li served as a design engineer for Micron Technology, the largest memory device and solution provider in the United States. Ms. Li received her M.B.A. from the MIT Sloan School of Management, MSEE from the University of Southern California, and B.A. from Tsinghua University. Ms. Li’s substantial experience in the financial and investment banking sectors, particularly in capital markets and strategic transactions of semiconductor industries in Asia, together with her knowledge of semiconductor technology and engineering processes, enhance the Board’s ability to oversee business and financial strategies of the Company..

Independent Director

Member of the Audit Committee